CN115988451B - Driving data transmission method and system - Google Patents
Driving data transmission method and system Download PDFInfo
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- CN115988451B CN115988451B CN202211658226.1A CN202211658226A CN115988451B CN 115988451 B CN115988451 B CN 115988451B CN 202211658226 A CN202211658226 A CN 202211658226A CN 115988451 B CN115988451 B CN 115988451B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention discloses a driving data transmission method and a driving data transmission system, wherein the method is applied to a vehicle-mounted terminal and comprises the following steps: collecting driving data in real time, and judging whether the uplink bandwidth of the vehicle-mounted terminal at the current moment is larger than a first threshold value; if yes, uploading the driving data which is not uploaded to a driving data server; if not, obtaining the identification information of the current base station connected with the network of the current base station, and sending the identification information to the driving data server so that the driving data server sends a speed increasing request to the network control center, the network control center sends a speed increasing instruction aiming at the uplink bandwidth to the current base station after receiving the speed increasing request, and the current base station increases the uplink bandwidth after receiving the speed increasing instruction. The invention judges the precondition by a method of monitoring whether the uplink bandwidth is lower in real time, and when the uplink bandwidth is lower, the temporary adjustment of the uplink bandwidth of the base station and the vehicle-mounted terminal is realized by a multiparty negotiation mode, thereby improving the uploading speed.
Description
Technical Field
The invention relates to the technical field of Internet of vehicles, in particular to a driving data transmission method and system.
Background
With the increase of the permeability of intelligent network-connected automobiles and the perfection of related regulations, the uploading of driving data through the internet of vehicles is an increasingly common behavior.
The prior art with the application number of 202111665154.9 provides a driving data transmission method and device, relates to the field of data processing, and particularly relates to the field of automatic driving. The specific implementation scheme is as follows: and carrying out pre-interaction processing with the vehicle-mounted equipment to determine that the vehicle-mounted equipment agrees to send first driving data to the data reading equipment, wherein the first driving data comprises N pieces of sub-data, and N is an integer greater than or equal to 1. N data transmission requests are respectively sent to the vehicle-mounted equipment, and N data transmission responses corresponding to the N data transmission requests are received; the ith data transmission request comprises an identification of the ith sub data, the ith data transmission response comprises the ith sub data, and i is an integer between 1 and N. And acquiring first driving data in the N data transmission responses. The technical scheme of the present disclosure can support a large amount of reading and transmission of the vehicle-capacity data.
However, in the prior art, after pre-interaction processing is performed on the data reading device and the vehicle-mounted device, after the vehicle-mounted device agrees to read the first vehicle-mounted data, N data transmission requests for acquiring the first vehicle-mounted data are respectively sent to the vehicle-mounted device, and then the first vehicle-mounted data are acquired from N data transmission responses sent by the vehicle-mounted data, so that the first vehicle-mounted data can be acquired in a fragmented manner, and a large number of readings and transmissions of the vehicle-mounted data can be supported. Although the data reading interaction is realized, the technical problem of how to more rapidly upload the driving data is not solved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a driving data transmission method and a driving data transmission system so as to more rapidly upload driving data.
The invention solves the technical problems through the following technical scheme:
the invention provides a driving data transmission method, which is applied to a vehicle-mounted terminal, and comprises the following steps:
collecting driving data in real time, and judging whether the uplink bandwidth of the vehicle-mounted terminal at the current moment is larger than a first threshold value;
if yes, uploading the driving data which is not uploaded to a driving data server;
if not, acquiring the identification information of the current base station connected with the network of the current base station, and transmitting the identification information to a driving data server so that the driving data server transmits a speed increasing request to a network control center, the network control center transmits a speed increasing instruction aiming at the uplink bandwidth to the current base station after receiving the speed increasing request, and the current base station increases the uplink bandwidth after receiving the speed increasing instruction;
after the uploading of the running data which is not uploaded is completed, the information of the completion of transmission is sent to the running data server, so that the running data server sends a speed reduction request to the network control center, the network control center sends a speed reduction instruction aiming at the uplink bandwidth to the current base station after receiving the speed reduction request, and the current base station recovers the uplink bandwidth to the uplink bandwidth at the current moment after receiving the speed reduction instruction.
Optionally, the uploading the driving data that has not been uploaded to the driving data server includes:
and packing and uploading the driving data in the range from the previous moment to the current moment to a driving data server.
Optionally, the obtaining the identification information of the current base station connected with the own network includes:
acquiring a plurality of optional base stations connected with a network of the vehicle-mounted terminal, and respectively establishing a routing link from the vehicle-mounted terminal to a driving data server through each optional base station;
for each routing link, testing the bandwidth value of the routing link, taking the routing link with the largest bandwidth value as a target link, and taking an optional base station contained in the target link as a current base station;
and acquiring the identification information of the current base station connected with the own network.
Optionally, the establishing a routing link from the vehicle-mounted terminal to the driving data server through each optional base station includes:
and acquiring the signal intensity of a communication base station received by the vehicle-mounted terminal, taking the communication base station with the signal intensity larger than the set intensity as an optional base station, and then respectively establishing a routing link from the vehicle-mounted terminal to the driving data server through each optional base station.
Optionally, the taking the routing link with the largest bandwidth value as the target link includes: .
For each routing link, acquiring each communication node on the routing link, and determining the total number of all other routing links passing through the communication node;
judging whether the ratio of the total number of other routing links to the communication nodes on the routing links is larger than a second threshold value or not;
if not, taking the route link as a target link;
if yes, deleting the routing link.
The invention also provides a driving data transmission method which is applied to the driving data server and comprises the following steps:
receiving identification information of a current base station sent by a vehicle-mounted terminal executing the method according to any one of the above;
the identification information of the current base station is sent to a network control center, the network control center sends a speed increasing instruction aiming at the uplink bandwidth to the current base station after receiving the speed increasing request, and the current base station increases the uplink bandwidth after receiving the speed increasing instruction;
and receiving driving data sent by the vehicle-mounted terminal.
The invention also provides a driving data transmission method which is applied to the network control center, and the method comprises the following steps:
receiving a speed increasing request sent by a driving data server executing the method;
after receiving the speed increasing request, the current base station sends a speed increasing instruction aiming at the uplink bandwidth to the current base station, and after receiving the speed increasing instruction, the current base station increases the uplink bandwidth.
The invention also provides a driving data transmission method which is applied to the current base station and comprises the following steps:
receiving a speed increasing instruction sent by a network control center for executing the method, and increasing the uplink bandwidth after receiving the speed increasing instruction;
and receiving the driving data sent by the vehicle-mounted terminal executing any one of the methods, and sending the driving data to a driving data server.
Optionally, the step of increasing the uplink bandwidth includes:
the method comprises the steps of obtaining the residual uplink bandwidth of a current base station and the number of other vehicle-mounted terminals communicated with the current base station;
and calculating the target value of the uplink bandwidth by using a formula, wherein the target value= (2 is the number of the residual uplink bandwidth/other vehicle-mounted terminals) +the uplink bandwidth.
The invention also provides a driving data transmission system, which comprises:
a vehicle terminal for executing the method according to any one of the above;
the driving data server executes the method;
a network control center for executing the method;
the current base station performing the method as described above.
Compared with the prior art, the invention has the following advantages:
the invention judges the precondition by a method of monitoring whether the uplink bandwidth is lower in real time, and when the uplink bandwidth is lower, the temporary adjustment of the uplink bandwidth of the base station and the vehicle-mounted terminal is realized by a multiparty negotiation mode, thereby improving the uploading speed.
Drawings
Fig. 1 is a schematic flow chart of a first method for transmitting driving data according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a second flow chart of a driving data transmission method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a third flow chart of a driving data transmission method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a fourth flow chart of a driving data transmission method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a driving data transmission system according to an embodiment of the present invention.
Detailed Description
The following describes in detail the examples of the present invention, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present invention is not limited to the following examples.
The embodiment of the invention provides a driving data transmission method and a driving data transmission system, and the first driving data transmission method provided by the embodiment of the invention is described below.
Example 1
Preferably, embodiment 1 of the present invention is applicable to a vehicle-mounted terminal, where the vehicle-mounted terminal uses hardware as a carrier, and integrally packages and sends CAN (controller area network) data and GPS (global positioning system) information on an automobile to a cloud server, and displays the data to a user for monitoring vehicle instrument information, battery information, motor information, fault information and the like. The mobile housekeeper vehicle-mounted terminal comprises hardware and an embedded system, and acquires vehicle condition information and GPS/Beidou positioning information through a CAN bus and a GPS/Beidou module, wherein the vehicle condition information comprises: conventional state information of the vehicle, fault alarm information, and related information such as a whole vehicle controller, a battery management system, a motor controller and the like. The collected information is communicated with an upper computer monitoring platform of the cloud through a GPRS/3G wireless network, and real-time monitoring and comprehensive supervision of the new energy automobile are achieved at the cloud.
Fig. 1 is a first flowchart of a driving data transmission method according to an embodiment of the present invention, as shown in fig. 1, where the method includes:
s101: collecting driving data in real time, and judging whether the uplink bandwidth of the vehicle-mounted terminal at the current moment is larger than a first threshold value; if yes, executing S102; if not, S103 is performed.
For example, a vehicle-mounted terminal installed on a new energy automobile can collect various data of the vehicle in real time, and the collected data is packaged and uploaded to a driving data server. In general, a GPRS network is used for uploading, that is, the operator base station is relied on to realize transmission of driving data.
The data acquisition is performed in real time, but the data transmission is performed periodically, that is, the driving data is not transmitted in real time, but is transmitted in packets after a certain time interval.
Before uploading driving data, the vehicle-mounted terminal sends a speed measurement request to the base station, and after the base station receives the speed measurement request, the speed measurement result is returned to the vehicle-mounted terminal.
And the vehicle-mounted terminal judges whether the uplink bandwidth of the vehicle-mounted terminal at the current moment is larger than a first threshold value according to the speed measurement result.
S102: and uploading the driving data which are not uploaded to a driving data server.
For example, the current time is 12:00:00, and the last time is 11:59:50. And when the uplink bandwidth meets the driving data uploading requirement, namely when the uplink bandwidth is larger than a first threshold value, directly uploading the driving data acquired between 11:59:50 and 12:00:00 to a driving data server.
S103: the method comprises the steps of obtaining identification information of a current base station connected with a network of the network, sending the identification information to a driving data server, enabling the driving data server to send a speed increasing request to a network control center, sending a speed increasing instruction aiming at uplink bandwidth to the current base station after the network control center receives the speed increasing request, and increasing the uplink bandwidth after the current base station receives the speed increasing instruction.
Because the vehicle-mounted terminal can move continuously in the GPRS network, communication connection can be realized with a plurality of base stations, but only one base station can be used for transmitting and downloading data at the same time. Therefore, the in-vehicle terminal needs to acquire the identification information a of the current base station connected to the own network.
The vehicle-mounted terminal sends the identification information A to a driving data server; and the driving data server sends a speed increasing request to the network control center when receiving the identification information A. The network control center judges whether the vehicle-mounted terminal has the speed increasing authority after receiving the speed increasing request, and when the vehicle-mounted terminal has the speed increasing authority, the network control center sends a speed increasing instruction aiming at the uplink bandwidth to the current base station. Further, the network control center judges whether the network control center has surplus receiving bandwidth after receiving the speed increasing request, and when the actual bandwidth of the network control center is larger than the receiving bandwidth, the network control center indicates that the network control center has surplus receiving bandwidth, and then the network control center sends a speed increasing instruction aiming at the uplink bandwidth to the current base station, wherein the speed increasing instruction is an instruction for increasing the uplink bandwidth.
And after receiving the speed increasing instruction, the current base station increases the uplink bandwidth and respectively sends the increased information to the network control center and the vehicle-mounted terminal, and the vehicle-mounted terminal uploads the driving data according to the increased uplink bandwidth. Further, in order to facilitate uploading of driving data in the driving process of the vehicle, the current base station diffuses the speed increasing instruction to the surrounding, so that the uplink bandwidth between the first other base stations adjacent to the current base station and the vehicle-mounted terminal is also increased. Furthermore, in order to ensure the uploading effect of the driving data, the first other base station also carries out secondary diffusion on the speed increasing instruction to the adjacent second other base station, so that the uplink bandwidth between the adjacent second other base station and the vehicle-mounted terminal is increased. By applying the embodiment of the invention, the coverage range of the three base stations exceeds the maximum distance travelled by the vehicle in the time period between the last moment and the current moment, so that the vehicle-mounted terminal can be prevented from frequently sending the speed increasing request to the driving data server, and the system efficiency and the data transmission speed are improved.
In practical application, the current base station may not be the same base station as the base station corresponding to the uplink bandwidth determined in step S101, but the technical effect of the embodiment of the present invention is not affected, because even two different base stations are adjacent base stations, and the network states of the two base stations are relatively similar, so that the above embodiment of the present invention can be applied to processing.
Further, the step of obtaining the identification information of the current base station connected with the own network specifically includes:
the vehicle-mounted terminal acquires a plurality of base stations connected with the vehicle-mounted terminal through a network, and takes a communication base station with signal strength larger than set strength as an optional base station:
optional base station 1, optional base station 2, optional base station 3.
Respectively establishing route links from the vehicle-mounted terminal to the driving data server through each optional base station:
route link 1, route link 2, route link 3.
For each routing link, testing the bandwidth value of the routing link, taking the routing link with the largest bandwidth value as a target link, and taking an optional base station contained in the target link as a current base station;
and acquiring the identification information of the current base station connected with the own network.
By applying the embodiment of the invention, the vehicle-mounted terminal can be screened out to upload the driving data by using the relatively good routing link.
S104: after the uploading of the running data which is not uploaded is completed, the information of the completion of transmission is sent to the running data server, so that the running data server sends a speed reduction request to the network control center, the network control center sends a speed reduction instruction aiming at the uplink bandwidth to the current base station after receiving the speed reduction request, and the current base station recovers the uplink bandwidth to the uplink bandwidth at the current moment after receiving the speed reduction instruction.
For example, after the vehicle-mounted terminal finishes uploading the driving data, the vehicle-mounted terminal sends a transmission completion message to the driving data server. After receiving the information of the completion of transmission, the traveling data server performs timestamp inspection on the data, after confirming that the traveling data acquired between 11:59:50 and 12:00:00 are received, the vehicle-mounted terminal is judged not to use the up-link bandwidth after the up-link bandwidth is regulated, the traveling data server sends a speed reduction request to the network control center, the network control center sends a speed reduction instruction aiming at the up-link bandwidth to the current base station after receiving the speed reduction request, and the current base station recovers the up-link bandwidth to the up-link bandwidth at the current moment after receiving the speed reduction instruction.
Further, the current base station diffuses the speed-down instruction to other surrounding base stations, and after receiving the speed-down instruction, the other base stations recover the uplink bandwidth with the vehicle-mounted terminal to the level before the speed-up.
Example 2
Based on example 1, example 2 discloses a method comprising:
s201 (not shown in the figure): collecting driving data in real time, and judging whether the uplink bandwidth of the vehicle-mounted terminal at the current moment is larger than a first threshold value; if yes, executing S202; if not, S203 is executed.
For example, a vehicle-mounted terminal installed on a new energy automobile can collect various data of the vehicle in real time, and the collected data is packaged and uploaded to a driving data server. In general, a GPRS network is used for uploading, that is, the operator base station is relied on to realize transmission of driving data.
The data acquisition is performed in real time, but the data transmission is performed periodically, that is, the driving data is not transmitted in real time, but is transmitted in packets after a certain time interval.
Before uploading driving data, the vehicle-mounted terminal sends a speed measurement request to the base station, and after the base station receives the speed measurement request, the speed measurement result is returned to the vehicle-mounted terminal.
And the vehicle-mounted terminal judges whether the uplink bandwidth of the vehicle-mounted terminal at the current moment is larger than a first threshold value, such as 1Mb/s, according to the speed measurement result.
S202 (not shown in the figure): and uploading the driving data which are not uploaded to a driving data server.
For example, the current time is 12:00:00, and the last time is 11:59:50. And when the uplink bandwidth meets the driving data uploading requirement, namely when the uplink bandwidth is larger than 1Mb/s, directly uploading the driving data acquired between 11:59:50 and 12:00:00 to a driving data server.
S203 (not shown in the figure): the method comprises the steps of obtaining identification information of a current base station connected with a network of the network, sending the identification information to a driving data server, enabling the driving data server to send a speed increasing request to a network control center, sending a speed increasing instruction aiming at uplink bandwidth to the current base station after the network control center receives the speed increasing request, and increasing the uplink bandwidth after the current base station receives the speed increasing instruction.
Because the vehicle-mounted terminal can move continuously in the GPRS network, communication connection can be realized with a plurality of base stations, but only one base station can be used for transmitting and downloading data at the same time. Therefore, the in-vehicle terminal needs to acquire the identification information a of the current base station connected to the own network.
The vehicle-mounted terminal sends the identification information A to a driving data server; and the driving data server sends a speed increasing request to the network control center when receiving the identification information A. The network control center judges whether the vehicle-mounted terminal has the speed increasing authority after receiving the speed increasing request, and when the vehicle-mounted terminal has the speed increasing authority, the network control center sends a speed increasing instruction aiming at the uplink bandwidth to the current base station. Further, the network control center judges whether the network control center has surplus receiving bandwidth after receiving the speed increasing request, and when the actual bandwidth of the network control center is larger than the receiving bandwidth, the network control center indicates that the network control center has surplus receiving bandwidth, and then the network control center sends a speed increasing instruction aiming at the uplink bandwidth to the current base station, wherein the speed increasing instruction is an instruction for increasing the uplink bandwidth.
And after receiving the speed increasing instruction, the current base station increases the uplink bandwidth and respectively sends the increased information to the network control center and the vehicle-mounted terminal, and the vehicle-mounted terminal uploads the driving data according to the increased uplink bandwidth. Further, in order to facilitate uploading of driving data in the driving process of the vehicle, the current base station diffuses the speed increasing instruction to the surrounding, so that the uplink bandwidth between the first other base stations adjacent to the current base station and the vehicle-mounted terminal is also increased. Furthermore, in order to ensure the uploading effect of the driving data, the first other base station also carries out secondary diffusion on the speed increasing instruction to the adjacent second other base station, so that the uplink bandwidth between the adjacent second other base station and the vehicle-mounted terminal is increased. By applying the embodiment of the invention, the coverage range of the three base stations exceeds the maximum distance travelled by the vehicle in the time period between the last moment and the current moment, so that the vehicle-mounted terminal can be prevented from frequently sending the speed increasing request to the driving data server, and the system efficiency and the data transmission speed are improved.
In practical application, the current base station may not be the same base station as the base station corresponding to the uplink bandwidth determined in step S101, but the technical effect of the embodiment of the present invention is not affected, because even two different base stations are adjacent base stations, and the network states of the two base stations are relatively similar, so that the above embodiment of the present invention can be applied to processing.
Further, the step of obtaining the identification information of the current base station connected with the own network specifically includes:
the vehicle-mounted terminal acquires a plurality of base stations connected with the vehicle-mounted terminal through a network, and takes a communication base station with signal strength larger than set strength as an optional base station:
optional base station 1, optional base station 2, optional base station 3.
Respectively establishing route links from the vehicle-mounted terminal to the driving data server through each optional base station:
route link 1, route link 2, route link 3.
For each routing link, testing the bandwidth value of the routing link, taking the routing link with the largest bandwidth value as a target link, and taking an optional base station contained in the target link as a current base station;
and acquiring the identification information of the current base station connected with the own network.
By applying the embodiment of the invention, the vehicle-mounted terminal can be screened out to upload the driving data by using the relatively good routing link.
S204 (not shown): after the uploading of the running data which is not uploaded is completed, the information of the completion of transmission is sent to the running data server, so that the running data server sends a speed reduction request to the network control center, the network control center sends a speed reduction instruction aiming at the uplink bandwidth to the current base station after receiving the speed reduction request, and the current base station recovers the uplink bandwidth to the uplink bandwidth at the current moment after receiving the speed reduction instruction.
For example, after the vehicle-mounted terminal finishes uploading the driving data, the vehicle-mounted terminal sends a transmission completion message to the driving data server. After receiving the information of the completion of transmission, the driving data server carries out time stamp checking on the data, after confirming that the time stamp of the received driving data is between 11:59:50 and 12:00:00, the vehicle-mounted terminal is judged not to use the up-link bandwidth after the up-link bandwidth is regulated, the driving data server sends a speed reduction request to the network control center, the network control center sends a speed reduction instruction aiming at the up-link bandwidth to the current base station after receiving the speed reduction request, and the current base station restores the up-link bandwidth to the up-link bandwidth at the current moment after receiving the speed reduction instruction.
Further, the current base station diffuses the speed-down instruction to other surrounding base stations, and after receiving the speed-down instruction, the other base stations recover the uplink bandwidth with the vehicle-mounted terminal to the level before the speed-up.
Example 3
Based on the embodiment of the present invention, embodiment 3 of the present invention provides another driving data transmission method, where the method uses the routing link with the largest bandwidth value as the target link, and includes:
for example, since the vehicle-mounted terminal can reach the driving data server in different routing manners, a plurality of routing links from the vehicle-mounted terminal to the driving data server are established first:
route link 1, route link 2, route link 3.
Taking the routing link 1 as an example, each communication node on the routing link 1 is obtained, and the communication node at least comprises: a base station connected to the vehicle-mounted terminal, a jump base station, and the like. For example, the base stations on the routing link 1 are base station 1, base station 2, and base station 3.
The total number of all other routing links through base station 1, base station 2, base station 3 is then determined. For example, the routing links passing through the base station 1 include other routing links N and n+1 in addition to the routing link 1. The base station 2 and the base station 3 are similar, and the number of other routing links passing through all the base stations on the routing link 1 is counted respectively, wherein the number of other routing links corresponding to the routing link 1 is 2. And so on.
Then, judging whether the ratio of the total number of other routing links to the communication nodes on the routing links is larger than a second threshold value or not; the ratio is calculated as: the total number of all other routing links for base station 1, base station 2, base station 3 is divided by 3.
If not, taking the route link as a target link;
if yes, deleting the routing link.
By adopting the embodiment of the invention, the quantity of other route links participated by the communication node on each route link is counted, so that the bandwidth surplus degree of the communication node is determined, and the bandwidth surplus degree of the communication node is high, so that the corresponding bandwidth surplus degree of the communication link is possibly higher, the transmission speed is relatively higher, and therefore, the route link with higher bandwidth surplus degree is used as the target link, and the transmission speed of driving data can be improved.
Example 4
Fig. 2 is a second flowchart of a driving data transmission method provided by an embodiment of the present invention, as shown in fig. 2, applied to a driving data server, where the method includes:
s301: receiving identification information of a current base station sent by a vehicle-mounted terminal performing the method described in the embodiment 1-3;
s302: the identification information of the current base station is sent to a network control center, the network control center sends a speed increasing instruction aiming at the uplink bandwidth to the current base station after receiving the speed increasing request, and the current base station increases the uplink bandwidth after receiving the speed increasing instruction;
s303: and receiving driving data sent by the vehicle-mounted terminal.
By applying the embodiment of the invention, the driving data can be quickly received at the driving data server.
Example 5
Fig. 3 is a third flow chart of a driving data transmission method provided by an embodiment of the present invention, as shown in fig. 3, applied to a network control center, where the method includes:
s401: receiving a speed increasing request sent by a driving data server for executing the method in the embodiment 4;
s402: after receiving the speed increasing request, the current base station sends a speed increasing instruction aiming at the uplink bandwidth to the current base station, and after receiving the speed increasing instruction, the current base station increases the uplink bandwidth.
The network control center judges whether the network control center has surplus receiving bandwidth after receiving the speed increasing request, and when the actual bandwidth of the network control center is larger than the receiving bandwidth, the network control center indicates that the network control center has surplus receiving bandwidth, and then the network control center sends a speed increasing instruction aiming at the uplink bandwidth to the current base station, wherein the speed increasing instruction is an instruction for increasing the uplink bandwidth.
By applying the embodiment of the invention, the uplink bandwidth between each base station and the vehicle-mounted terminal can be flexibly controlled in the network control center.
Example 6
Fig. 4 is a fourth flowchart of a driving data transmission method according to an embodiment of the present invention, as shown in fig. 4, applied to a current base station, where the method includes:
s501: receiving a speed increasing instruction sent by a network control center for executing the method described in the embodiment 5, and after receiving the speed increasing instruction, increasing the uplink bandwidth;
s502: and receiving the driving data sent by the vehicle-mounted terminal for executing the method described in the embodiment 1-3, and sending the driving data to a driving data server.
By applying the embodiment of the invention, the driving data can be received rapidly.
In a specific real-time manner of the embodiment of the present invention, the uplink bandwidth is adjusted to be large, which may specifically include:
the uplink bandwidth from the vehicle-mounted terminal to the current base station is T1; the method comprises the steps of obtaining the residual uplink bandwidth B of a current base station and the number M of other vehicle-mounted terminals communicated with the current base station;
using the formula, the target value t2= (2*B/M) +t1, the target value of the upstream bandwidth is calculated.
By applying the embodiment of the invention, the residual uplink bandwidth of the current base station is distributed to the vehicle-mounted terminal and other vehicle-mounted terminals, and the residual uplink bandwidth is reserved for the other vehicle-mounted terminals, and after the current vehicle-mounted terminal is accelerated, the current base station can also respond to the acceleration requests of the other vehicle-mounted terminals.
Example 7
Fig. 5 is a schematic structural diagram of a driving data transmission system according to an embodiment of the present invention, as shown in fig. 5, where the system includes:
a vehicle-mounted terminal 601 performing the method described in embodiment 1-embodiment 3;
a driving data server 602 performing the method as described in embodiment 4;
a network control center 603 performing the method described in embodiment 5;
the current base station 604 performing the method as described in embodiment 6.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The driving data transmission method is characterized by being applied to a vehicle-mounted terminal, and comprises the following steps:
collecting driving data in real time, and judging whether the uplink bandwidth of the vehicle-mounted terminal at the current moment is larger than a first threshold value;
if yes, uploading the driving data which is not uploaded to a driving data server;
if not, acquiring the identification information of the current base station connected with the network of the current base station, and transmitting the identification information to a driving data server so that the driving data server transmits a speed increasing request to a network control center, the network control center transmits a speed increasing instruction aiming at the uplink bandwidth to the current base station after receiving the speed increasing request, and the current base station increases the uplink bandwidth after receiving the speed increasing instruction;
after the uploading of the running data which is not uploaded is completed, the information of the completion of transmission is sent to the running data server, so that the running data server sends a speed reduction request to the network control center, the network control center sends a speed reduction instruction aiming at the uplink bandwidth to the current base station after receiving the speed reduction request, and the current base station recovers the uplink bandwidth to the uplink bandwidth at the current moment after receiving the speed reduction instruction.
2. The method for transmitting driving data according to claim 1, wherein uploading the driving data that has not been uploaded to the driving data server comprises:
and packing and uploading the driving data in the range from the previous moment to the current moment to a driving data server.
3. The method for transmitting driving data according to claim 1, wherein the obtaining the identification information of the current base station connected to the own network includes:
acquiring a plurality of optional base stations connected with a network of the vehicle-mounted terminal, and respectively establishing a routing link from the vehicle-mounted terminal to a driving data server through each optional base station;
for each routing link, testing the bandwidth value of the routing link, taking the routing link with the largest bandwidth value as a target link, and taking an optional base station contained in the target link as a current base station;
and acquiring the identification information of the current base station connected with the own network.
4. A driving data transmission method according to claim 3, wherein the establishing routing links of the vehicle-mounted terminal to the driving data server via the respective optional base stations respectively comprises:
and acquiring the signal intensity of a communication base station received by the vehicle-mounted terminal, taking the communication base station with the signal intensity larger than the set intensity as an optional base station, and then respectively establishing a routing link from the vehicle-mounted terminal to the driving data server through each optional base station.
5. A driving data transmission method according to claim 3, wherein the routing link with the largest bandwidth value is used as a target link, and the method comprises:
for each routing link, acquiring each communication node on the routing link, and determining the total number of all other routing links passing through the communication node;
judging whether the ratio of the total number of other routing links to the communication nodes on the routing links is larger than a second threshold value or not;
if not, taking the route link as a target link;
if yes, deleting the routing link.
6. A driving data transmission method, which is characterized by being applied to a driving data server, the method comprising:
receiving identification information of a current base station sent by a vehicle-mounted terminal for executing the method according to any one of claims 1-5;
the identification information of the current base station is sent to a network control center, the network control center sends a speed increasing instruction aiming at the uplink bandwidth to the current base station after receiving the speed increasing request, and the current base station increases the uplink bandwidth after receiving the speed increasing instruction;
and receiving driving data sent by the vehicle-mounted terminal.
7. The driving data transmission method is characterized by being applied to a network control center, and comprises the following steps:
receiving a speed increasing request sent by a driving data server for executing the method of claim 6;
after receiving the speed increasing request, the current base station sends a speed increasing instruction aiming at the uplink bandwidth to the current base station, and after receiving the speed increasing instruction, the current base station increases the uplink bandwidth.
8. A driving data transmission method, which is applied to a current base station, the method comprising:
receiving a speed increasing instruction sent by a network control center for executing the method as claimed in claim 7, and increasing the uplink bandwidth after receiving the speed increasing instruction;
vehicle data sent by a vehicle-mounted terminal for executing the method of any one of claims 1-5 is received, and the vehicle data is sent to a vehicle data server.
9. The method for transmitting traffic data according to claim 8, wherein said increasing the uplink bandwidth comprises:
the method comprises the steps of obtaining the residual uplink bandwidth of a current base station and the number of other vehicle-mounted terminals communicated with the current base station;
and calculating the target value of the uplink bandwidth by using a formula, wherein the target value= (2 is the number of the residual uplink bandwidth/other vehicle-mounted terminals) +the uplink bandwidth.
10. A driving data transmission system, the system comprising:
vehicle-mounted terminal performing the method according to any of claims 1-5;
a drive data server performing the method of claim 6;
a network control center performing the method of claim 7;
current base station performing the method according to claim 8 or 9.
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